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38x75+45x25简便运算怎么做

=38×25×3+45×25 =25×114+25×45 =25×(114+45) =25×159 =25×160-25×1 =4000-25 =3975

(48X75X81)÷(24X25X2) =(2×24×25×3×81)÷(24×25×2) =3×81 =243

23×75+69×25 =23×3×25+69×25 =69×25+69×25 =69×50 =69×100÷2 =3450

189x25=190x25-1x25=4750-25=4725 37x75=30x75+7x75=2250+525=2775

原式=35×(75+25) =35×100 =3500 满意采纳奥

25x75+125x25 =25×(75+125) =25×200 =50000

18x75+18x25 =18x(75+25) =18x100 =1800 17x83+17x17 =17x(83+17) =17x100 =1700 125x320x25 =125x(80x4)x25 =(125x80)(4x25) =10000x100 =1000000 840x50-840x25+840x75 =840x(50-25+75) =840x100 =84000

7x75-7x25 =7x(75-25) =7x50 =350

278*75+2.78*25 = 20 919.5

用简便方法计算 31x75十62x75十93x25 =75×(31+62)+93×25 =75×93+93×25 =93×(75+25) =93×100 =9300

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